Updating to --next versions shows incorrect warnings.

[filipesilva]

This issue impacts 9.0.0-rc.0.

kamik@RED-X1C6 MINGW64 /d/sandbox/super-productivity (update-9)
$ ng update @angular/cli @angular/core --next
The installed Angular CLI version is older than the latest published version.
Installing a temporary version to perform the update.
Installing packages for tooling via npm.
C:\Users\kamik\AppData\Local\Temp\.ng-temp-packages-qD4bvL\ng -> C:\Users\kamik\AppData\Local\Temp\.ng-temp-packages-qD4bvL\node_modules\@angular\cli\bin\ng

> @angular/cli@9.0.0-rc.0 postinstall C:\Users\kamik\AppData\Local\Temp\.ng-temp-packages-qD4bvL\node_modules\@angular\cli
> node ./bin/postinstall/script.js

+ @angular/cli@9.0.0-rc.0
added 254 packages from 205 contributors in 19.356s
Installed packages for tooling via npm.
Using package manager: 'npm'
Collecting installed dependencies...
Found 87 dependencies.
Fetching dependency metadata from registry...
                  Package "@angular/core" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@ngx-translate/core" has an incompatible peer dependency to "@angular/core" (requires ">=7.0.0", would install "9.0.0-rc.0").
                  Package "@angular/common" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@ngx-translate/http-loader" has an incompatible peer dependency to "@angular/common" (requires ">=7.0.0", would install "9.0.0-rc.0").
                  Package "@angular/platform-browser" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/compiler" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/animations" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/forms" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@ngx-formly/core" has an incompatible peer dependency to "@angular/forms" (requires ">=7.0.0", would install "9.0.0-rc.0").
                  Package "@angular/compiler-cli" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/platform-browser-dynamic" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/platform-server" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/router" has a missing peer dependency of "tslib" @ "^1.10.0".
                  Package "@angular/service-worker" has a missing peer dependency of "tslib" @ "^1.10.0".
Incompatible peer dependencies found.
Peer dependency warnings when installing dependencies means that those dependencies might not work correctly together.
You can use the '--force' option to ignore incompatible peer dependencies and instead address these warnings later.

While the "missing peer dependency" won't stop the update from going through, the "incompatible peer dependency" ones will.

But all the "incompatible peer dependency" errors above actually include ranges that should be valid when using --next:

Package "@ngx-translate/core" has an incompatible peer dependency to "@angular/core" (requires ">=7.0.0", would install "9.0.0-rc.0").
Package "@ngx-translate/http-loader" has an incompatible peer dependency to "@angular/common" (requires ">=7.0.0", would install "9.0.0-rc.0").
Package "@ngx-formly/core" has an incompatible peer dependency to "@angular/forms" (requires ">=7.0.0", would install "9.0.0-rc.0").

This happened while updating https://github.com/johannesjo/super-productivity

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